Configure for JTDX

Hi allI have a problem which I cannot solve. Set up is Flex 6500, Win10 and JTDX.I can receive JT65 OK, but when I want to transmit, JTDX will key the rig and put it on transmit, but there is no power output.I previously did manage to make it work, but for some unknown reason, the global setup was lost.I belive there are conflicts in Win10 with sound cards that get modified under some circumstances, but I could not detect which.Anyone can help please ??

In WSJT - make sure that your transmit audio device is set to the DAX TX Stream. The audio device associations sometimes get hosed whenever Windows 10 does an update, and you need to check that they are assigned correctly.

KenDAX TX Audio is blue, but does not show audio when TX (goes TX but no output)IQ Stream in Dax panel shows right frequency, but is red with a "driver error" message next to it.I have slivce A on CAT com 4, shows process wsjtx and Audio Switch TX on.

In JTDX setup, the input is DAX Audio RX 1, the Output is Dax Audio TX, both mono. I believe this is correct. In Windows Audio panel config, there are 2 DAX AUDIO RX 1 , one shows as default device, the other one cannot be modified and shows as "not connected"

Slowly progressing, but one problem solved, one new problem ! Now my TX is fine (I do get power out), but I am getting no reception on JTDX (I see signals on the Flex).The reception window on JTDX shows a repeated message saying "input signal low rms" (Windows Sound Card level is maximum)

Check the DAX assignment in the slice flag is equal to the DAX channel in the JTDX audio tab. On the slice flag speaker icon check that you can hear the band activity in the ear phones. The level indicator on JTDX [right side] should be around 70. Use the AGCT slider on the slice flag to control the level on JTDX. Set DAX slider on DAX control panel to around 50.

I cannot do anything of the above, the whole DAX thing is not working now !

The very strange thing is the whole setup was working this morning (I made a contact on 6m). So I do not think a Windows update has anything to do with my problem.Why am I now getting this DAX error message when booting Windows (it did not happen yesterday) ?

Should I uninstall DAX and reinstall ? If so, where can I find the installer (could not find it on the Flex download page)

Or let's go step by step.In Windows sound panel configuration, which sound device should be the default ? If DAX, then how can I get sound for other programs (to listen to a youtube video for example). Which should be the communication default ?

Unless you are doing something via REMOTE with the remote button ON, you don't need to mess with Default Sound device and Default Communications settings in the Windows Sound panel.

Those have to do with inputs and outputs of the Computer's own sound card.

Leave these defaulted to your computer mic and speaker devices.

DAX channels function in the same was as an ADDITIONAL sound device that you access directly, outside of the Windows Sound Panel. In effect, the 6500 has it own built-in sound card. Actually several of them...(All those different DAX Channels)

When installed, the DAX Driver sets up a number of DAX Channels. Each DAX Channel is like a virtual audio cable, with two "ends," One end is the "Public" end (DAX AUDIO RX 1 through 8) that you connect to your digital program. The other is the "Radio" end (DAX RESERVED RX 1 through 8) which is what the radio connects to internally.

The whole list installed are as follows:

8 - DAX Audio RX (1-8) - (sends receive audio to outside programs, digital programs, etc.)8 - DAX RESERVED AUDIO (RX 1-8) - (the radio end of those cables)1 - DAX Audio TX - (the line used for input to the transmitter from your digital program)1 - DAX RESERVED AUDIO TX - (The radio end of that TX input)1 - DAX MIC Audio - (feeds your MIC audio, or whatever audio is being transmitted OUT to a computer program for recording - i.e. recording a contest Digital Voice Keyer)1- DAX RESERVED MIC Audio - (The radio end of that cable)4 - DAX IQ RX (1-4) - (wide-band I/Q audio data used by programs such as CW Skimmer)4 - DAX RESERVED IQ RX (1-4) - (the radio end of those cables)

Where you need to Select your DAX devices is in the JTDX program itself.

Set the INPUT to the DAX Audio RX Channel you prefer...Here it is set to Channel 1. Which you also need to select on your Slice, and check that it is turned on in your DAX Control Panel.

Set the OUTPUT to the DAX Audio TX Channel. and make sure that it is turned ON in the DAX Control Panel, and that the DAX button is ON in the TX Panel of SSDR.

Again...Do NOT use RESERVED Channels. They are RESERVED for the Radio's internal use.

And don't mess with the Windows Sound Utility (The Record and Playback menus accessed with the little speaker icon) They are not needed for JTDX. Setting your DAX Channels to Default or Default Communications devices with this utility may hijack your DAX sound devices and keep them from working correctly.

Hope this helps.Good luck,Ken - NM9P

ADVANCED USER HINT:Since the 6500 only has 4 slices and can only use 4 DAX Audio Channel "pairs" at the same time (One "pair" for each slice) Many operators will choose to go into Device Manager and right-click on the DAX Audio RX Channels 5-8 and the DAX RESERVED Audio Channels 5-8 and "Disable" them. (DON'T Disable the MIC and TX pairs. and DON'T disable the IQ pairs).

SOME digital programs will not list "disabled" sound devices, reducing the clutter in the audio selection screens. Other, more archaic digital programs will only display a certain number of Audio Devices, requiring this step, or merely selecting and using a DAX Audio RX Channel that you CAN see on the list.

BTW. The Windows Sound Utility lists both ends of each virtual cable Both in the Record tab and in the Playback tab, giving each end a different icon in each of the tabs. This makes it look like you have twice as many virtual audio cables as are really installed.....another way that Windows is "messed up" and out of touch with some of the new technology, in the name of backwards compatibility.